#![allow(unused_variables)]
fn main() {
    let v = &[0xD834, 0xDD1E, 0x006d, 0x0075, 0x0073, 0x0069, 0x0063];
    assert_eq!(String::from("𝄞music"), String::from_utf16(v).unwrap());
    let v = &[0xD834, 0xDD1E, 0x006d, 0x0075, 0xD800, 0x0069, 0x0063];
    assert!(String::from_utf16(v).is_err());
}